While every detail of Princess Eugenie and Jack Brooksbank’s wedding ceremony was broadcast to 3 million people in the United Kingdom, their wedding reception was private, for family and friends only. Just the most basic details (like the evening party location, the Royal Lodge) were made public.

But Prince Andrew just gave more people a glimpse inside the über-exclusive party. He shared a slideshow of the ornate flower arrangements on Instagram.

The florals were created by Simon Lycett and Paul Thomas Flowers, using fall foliage and eco-friendly materials from Windsor Great Park. Prince Harry and Meghan Markle also used local flora from the park for their May 2018 nuptials.

“The flower arrangements displayed during the wedding reception for Princess Eugenie and Jack Brooksbank last Friday at Windsor Castle were created using autumnal foliage from Windsor Great Park and biodegradable oasis, following the couple’s autumnal theme and eco-friendly request,” Andrew wrote on Instagram.

One photo shows a vase of autumn roses from flower breeder David Austin, mixed with berries and colorful leaves. The next shot: a cascading arrangement of blooms and greenery, emerging from a pillar in a grand hall.

But perhaps the most stunning photo of all is one of a staircase surrounded by indoor trees, which gave the night an “enchanted forest” feel.